The Leo emoji represents the fifth Zodiac sign which is attributed to all people who were born between 23.07 to 22.08. This traditional symbol for those who are unfamiliar with Zodiac signs and constellations may resemble a doodle with a circle on the left side. As for the meaning first of all it points out the approximate date of birth of the person who uses it. And second — only for those who believe in Zodiac — it marks proud and noble people. (Source: Emojis.wiki, Fair use)